diff options
| author | Wenjing Liu <wenjing.liu@amd.com> | 2022-11-23 02:06:28 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-12-15 20:18:19 +0300 |
| commit | 345ce3fc9262881343dc6faa4ec132bc21e88756 (patch) | |
| tree | 5f5108689a911553ca397d6581e3bf426ef6fb05 /drivers/gpu/drm/amd/display/dc/dc_dp_types.h | |
| parent | 752e89a70cca1c644ccc9f69c1abd6c2b95ca9d7 (diff) | |
| download | linux-345ce3fc9262881343dc6faa4ec132bc21e88756.tar.xz | |
drm/amd/display: add support for three new square pattern variants from DP2.1 specs
[why]
DP2.1 specs has brought 3 new variants of sqaure patterns with different
pre-shoot and de-emphasis equalization requirements. The commit adds
logic to identify these variants and apply corresponding eqaulization
requirements into hardware lane settings.
Reviewed-by: George Shen <George.Shen@amd.com>
Acked-by: Jasdeep Dhillon <jdhillon@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_dp_types.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_dp_types.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h index 296793d8b2bf..73f58ac3b93f 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h @@ -925,6 +925,9 @@ struct dpcd_usb4_dp_tunneling_info { #ifndef DP_128b_132b_TRAINING_AUX_RD_INTERVAL #define DP_128b_132b_TRAINING_AUX_RD_INTERVAL 0x2216 #endif +#ifndef DP_LINK_SQUARE_PATTERN +#define DP_LINK_SQUARE_PATTERN 0x10F +#endif #ifndef DP_CABLE_ATTRIBUTES_UPDATED_BY_DPRX #define DP_CABLE_ATTRIBUTES_UPDATED_BY_DPRX 0x2217 #endif |